Type-writing machine.



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Patented Jan. 12, 1909.

iNvENTfiQ- M. W. POOL.

TYPE WRITING MACHINE.

APPLICATION FILED APR. 20, 1906.

WITNE55E5= Ma a - M. POOL. TYPE WRITING MACHINE. APPLICATION FILED APR. 20, 1906.

9093334, Patentd Jan. 12,1909.

3 BHEETfi-SHEIIT 2.

Zia @MM 145 ATTORNEY M. W. POOL. TYPHWRITING momma. APPLICATION FILED APR. 20, 1906.

Patented Jan. 12, 1909.

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INVENTUQ= mm-N55595:-

T'E'URNEV UNITED strAtrns PATENT OFFICE.

MORRIS W. POOL, OF NEW YORK, N. Y., ASSIGNOR TO THE MONARCH TYPEWRITER COMPANY,

OF SYRACUSE, NEW YORK, A CORPORATION YORK.

TYPE-WRITING- MACHINE.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed April 20, 1908. Serial No. 312,816.

To all whom it'may concern: Be it known that I, MoRRIs W. PooL, citizen of the United States, and resident of the borough of Brooklyn, city of New York, in

which the following is a specification.

My invention relates especially to carriage retarding devices for typewriting machines. In machines of this character which employ carriage retarding mechanism, it is usual to connect the retardingmechanism with the traveling element or carriage when the latter is released from its step-by-step feeding means so that at the outset the carriage must overcome the inertia of the movable part of the retarding mechanism. This tends to check the speed of the carriage and so consumes time.

The main object of the present invention is to so connect the carriage with the retarding device that the latter will not be operative until the carriage has been released from its ste -by-step feeding means and has been movec freely or caused to jump by the carriage power a distance equal to a plurality of letter spaces. By providing such a connection the inertia of the carriage itself is overcome before it starts to o erate the retarder and the time consumed y the carriage in jumping from one position to another the writing lineis materially lessened.

To the above and otherends-the invention consists in the features of c0ns,truction,-combinations of devices and arrangements'of parts hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical front to rear sectional view of so much'of a typewriting machine as is'necessary to illustrate my invention. Fig. 2 is a rear elevation of the machine, partsbeing omitted and parts being broken away. Fig. 3 is an enlarged fragmentary sectional view of the u per part of the machine taken at the left of tiie retarding device. Fig. 4. is an enlarged longitudinal sectional view taken through the axis of the retarding device. Fig. 5 is an enlarged transverse sectional view taken through the casing of the retarding device. Fig. 6' is an enlarged perspective view of a part of the retarding device. Fig. 7 is an enlarged sectional view taken on a plane represented by the line x-a: in Fig. 4

and looking in the direction of the arrows at said line; Fig. 8 is a view corresponding to Fig. 7 but showing some of the parts in different relations from those in which they appear in said Fig. 7. Fig. 9 is an enlarged perspective view of a modified construction of one of the parts hereinafter termed a toothed rotary member or pinion. v

My invention is shown as applied to a typewriting machine generally resembling the Monarch typewriter and in combination with one form of retarding device' It is to be-understood, however, that the nature of the inventionis such that it may readily be adapted to other styles of writing machines andcombined with other forms of retarding devices. The particular retarding device herein illustrated is not claimed per .90 by me as said retarding device is the inventionof others.

Referring now to the drawings, the main frame of the machine is shown as com rising a base 1, corner posts 2 and a top p ate 3.

Printing instrumentalities (not shown) are mounted on the main frame and are cooperative with the front face of a rotary platen 4,

said platen being journaled in side bars 5 projecting forwardly from a rear bar 6, said side bars and rear bar constituting a platen frame, carrier or carriage. The top and bottom faces of the rear bar 6 are grooved to co- 0 erate with anti-friction balls. 7, said balls a so cooperating with top and bottom guide rails Sand 9, said guide rails being fixed by screws 10 to standards 11 rising from the top late. Arms 12 are pivoted at 13 in the side a'rs 5, said arms extending rearwardly from their pivots and carrying at their free ends a carriage rack 14. Rack springs 15 normally maintain said rack in engagement with a carriage pinion 16, said pinion being fixed to the front end of a horizontally disposed shaft 17 I jour'naled in a, bracket 18 fixed to the top plate. shaft 17 at the rear thereof is an escapement wheel 19, said escapement wheel coo crating with dogs 20 carried at the top of a vibratory dog carrier or rocker 21 pivotally mounted at 22 in a bracket 23 depending from the top late. The dog carrier is provided with a orizontally disposed and forwardly project- .ing'arm 24 which is connected by a link 25 with a universal bar (not shown) of suitable construction. .The universal bar is adapted to be operated each time the printing instru- Operatively connected with said leftward across the top plate under the influence of a carriage spring drum 26 pivoted at 27 to the frame of the machine and connected by a band or strap 28 with a pin 29 depending from the rear bar of the carriage.

A. horizontally disposed and rearwardly projecting carriage stop 30 is secured by screws 31 at the back and about midway of the length of the rear bar of the carriage.

Said carriage stop is cooperative with one or more column stops 32 adjustably mounted on a toothed stop bar 33 journaled in lugs 34 projectingrearwardly from the standards 11. A forwardly projectin arm 35 is secured to the right end of the co umn stop bar 33 by a screw 36. Pivotally connected with the forward end of said arm at 37is a vertically disposed link 38, said link extending through suitable openings in the top plate 3 and base 1 and being pivotally connected at its lower end as indicated at 39 with the rear end of an auxiliary lever 40 pivoted to a shouldered v screw 41 projecting laterally inward from coiled s ring the right hand side of the base. The auxiliary lever 40 is provided with an upwardly extending portion 42 formed with a slot 43 which receives a pin 44 extending-laterally from a tabulating key lever 45 pivoted at 46 to 2. lug 47 depending from the base. The 'tabulating key lever is provided at its rear end with a restoring spring 48 and is curved upwardly at its forward end, terminating in a key cap or button 49. Suitably. secured to the link 38 beneath the top plate is. an arm or lug 50 which is adapted to actuate the carriage releasin and retarding devices in a manner present y to be described. A 51 surrounds the link 38 and is confine between the arm 50 and the top of the base 1, said spring tending to maintain the column stops 31 normally out of the path of the carriage stop .30 as indicated in Fig. 1. It will be understood that when the tabulatingkey 49. is depressed the column stop bar is turned on its pivotal axis to bring the column stops 32 thereon into the path of the carriage stop 30 as shown in Fig. 3. Theree after the carriage may be released or freed from its step-by-step feeding mechanism in any suitable manner, as, for example, in the way presently to be described. A lever 52 is pivoted at 53 to a lug 54 depending from the plate. The right. arm of said lever is proto vised with astop 55 which is normally maintained in contact with the under side of the top plate 3 by a restoring sprin '56 coiled around the pivot of the lever. W en in normal position the right arm of the lever 52 lies below and in the path of the arm or lug 50 on the link '38 as shown in Fi s. 1 and 2. The inner or left hand arm of t e lever 52 is connected in the usual- Monarch tabulating mechanism with a rack lifter of known construction, but in the present instance saidrack lifter is preferably dispensed with and a bifurcation cocperating with the retarding device next to be described to move the latter to operative position and to lift the carriage rack 15 to release or free, the carriage from its step-by-step feeding mechanism.

The retarding device roper'is pivotallybracket 60, which supported on a U-sha e bracket is secured to t e right of the bracket 18 of the esca ement mechanism by a headed screw 61. extend upward and are formed with bearing openings to receive shouldered screws 62 (Fig. 4), said screws being received in threadedopenings in a bearing piece 63 and thereby pivotally connecting said bearing piece with the bracket The bearing piece is bored out to receive a shaft 64, said shaft at its rear having secured to it a plurality-0f arms or blades 65 (Figs. 4 and 5). The arms 65 are preferably housed in a cylindrical box or casor stationary retarder element 66 which is T e side arms of the bracket 60 sintably secured in a fixed relation with the I and sald casing contains a quantity of material 68 which may be either liquid or solid as preferred. Shot or small balls are shown.

he bearing piece 63 is provided near its forward end with laterally extending pins 69, which, as best shown in Figs. 3 and 4, enter openings in the arms 59 of the link 57, there by connecting said link with the tabulating device and enabling the latter to be swung up and down on its pivots 62 from the pbsition shown in Fig. 1 to that shown in Fig. 3, when the tabulating key 49 is operated. The retarding mechanism as thus far described, .is not my invention and I do not claim it, save in. combination with other features now to be described.

As best shown in Fig. 4 the forward portion of the shaft 64 projects beyond the end of its bearing piece 63. Mounted on the shaft 64 abutting against the end of the bearing piece 63, is a cylindrical box-like member or device designated as a whole by the reference numeral 70. Projecting inwardly from the rim 71 of the member 70 is a sto or lug 72 and at one side of the stop 72 @he rim is formed with a slot or cut away 73. The member 70 is formed with a central rearwardly projecting boss or hub 74 which is formed with a perforation 75 through which ing the member 70 in a fixed-relation with aaaaaa I a said shaft. The member 70 receives the hub 77 of a toothed rotary member or pinion 78, said inion being provided with radial teeth 79 a apted to cooperate with the teeth of the carriage rack 15. The pinion 78 is loosely mounted on the shaft 64 and isconfined between the member 70 and the head of a retaining screw 80 which screws into the forward end of the shaft 64. A fine wire spring 81 is coiled around the hub 77 of the pinion within the box-like member 70, one end of said spring being hooked to engage with the slot 73 in the rim of the member 70 and .the other end of said spring passing through a drill hole in the hub 77 of the pinion and thenbeing bent back to prevent accidental displacement from said drill hole. Between the coiled spring 81 and the body of the pinion the hub 77 of said pinion is provided with a stop or pin 82 and the coiled spring tends to maintain said pin-82 normally in engagement withthe stop 72 on the member 70, this position of the parts being shown in Figs. 4 and'7. Referring now to the operation of the parts, theconnecting or engaging device or pinion 78, as shown in Fig. 1, normally lies just below and out of engagement with the teeth of the carriage rack 15, which rack normally engages with the feed pinion 16.

When the tabulating key 49 is adequately depressed it operates through the auxiliary lever 40, link 38 and arm to turn the column stop bar 33 and bring the column stops 32 thereon into the path of the carriage stop 35 30. As the link 38 is moved longitudinally downward during this stop positioning ope'r ation, the arm 50 on said link engages with the lever 52, depressing the right hand arm of said lever and raising the left-hand arm 40 thereof. As the left hand arm is swung upwardlyit raises the link 57,swinging the carriage retarding device on its pivots 62 and bringing the pinion 78 .into mesh with the rack 15. As the upward movement of the pinion'78 continues the rack 15: will be swung upwardly about its pivots 13-:and will disengage from the carriage feed pinion 16. As .soon as this disengagement occurs, the carriage will be free to be drawn leftward under the influence of the spring drum 26 and will.

turn the pinion 78 against the tension of the hair spring 81 from the position indicated in Figs. 4 and 7 to that shown in Fig.8. This turning movement, it will be noted, amounts almost to a complete revolution of the pinion 78 and is equal in fact to a distance of about fifteen letter spaces, or something like an inch and a half. It will be apparent therefore that during the first part of the to movement of the carriage after it has been freed from its step-by-step feeding mechanism, said carriage will run freely from the left towards the right to a predetermined extent independently of the retarding device, which during this free or independent run remains unafiected. As soon, however, as the pinor engaging or connectting device 82 engages the projection or engaging or connecting device 72 of the member 70, movement will be transmitted through the shaft 64 79 ating tabulating stops 30 and 32, the tabu at- 30 ing and retarding devices will be restored to normal position under the influence of their restoring springs as soon as the pinion 78has been moved downward far enough to cause the disengagement of its teeth 79 from the 35 teeth of the carriage rack 15. Said pinion will be turned in reverse direction under the influence of the spring 81 from the position shown in Fig. 8 back to the normal position shown in Figs. 4 and 7. The pinion 78 is 0 small and very little power is needed to turn it so that the spring 81 may be of exceeds ingly fine wire, such as a hair spring. This construction in which a fine springis employed is a simple one and'l prefer it, but, if desired, the spring may be dispensed with and the rotary member may be restored to the-normal relation with the retarding device by some other means. The 0 eration above outlined may be repeated, 0 course, we

- as often as desired.

It will be noted that by my invention I provide a lost motion connection between the carriage or traveling element and the retarding device such that when the carriage is released from. its step-by-step feeding mechanism it may move freely a sufficient distance to acquire considerable speed before the retarding device begins to operate on said carriage. The initial-movement of the no carriage free from the influence of the retarder is of such extent, however, that should said carriage be arrested by'the engagement of the cooperating tabulating stops before said retarder is taken up, still the impact of 11-5 the co-acting sto s wou d not be suficiently great to be harmful. It is only on comparatively long runs that the carriage acquires sufficient momentum to cause a too severe impact of the arresting parts and it is apparout that by my present invention such harmful impact will be avoided because the retardi'ng device will at that time be operative. The invention is in princi le, I believe, broadly new and I'desire to e aim it broadly and do not wish to. be limited to the particuhr mechanismfor carrying it out shown and described herein. Various other means may be employed for obtaining the results.ob-.

tained by the mechanism illustrated and said retarding device invention. One example tions isillustrated in Fig. 9 wherein is shown hub or boss 84 of the pinion is mechanism itself may be modified in various ways without departing from the scope of the of such modificacarriage.

jner hereinbefore explained. To the left of said sto with a p urality of threaded radial openings 86 spaced apart which areadapted to receive pin 85 the hub may be provided a screw'sto 87. When the pinion 83 engages with t e carriage rack and the carria e is released, said pinion will be turned free y until the screw stop 87 engages with the projecting stop 72 to actuate the retarding device. It Wlll be apparant that the amount of free turning movement of the pinion 83v will depend u on. the distance the screw stop 87 is from t e normally engaged stop Y85 and that this-distance may be varied as desired by moving the screw stop from one hole 86 to another.-

It will furthermore be apparent that if it is desired to increase the free initial movement of the carriage instead of decreas ing it, that said increased movementmay be provided for b interposing an additional rotarymemberoosely mounted on the shaft and the member 70 fast .on the sha t inion 78 64 between the rotary member or,

64, said "member being provided with stop portions and being adapted to be turned by the pinion to effect an operative connection between the latter and the retarding device proper.

What Iclaim as new and desire tosecure by Letters Patent, is v 1. In a typewriting machine, the combination of a carriage, a carriage retarding device, means to connect the retarding device V to the carriage, and means to enable the car- 'riage to travel freely prior to the action of d I 3. In a typ'ewriting said retarder.

2. In a typewriting machine, the combination of a ower driven carria e, a carriage retarding evice actuated by t e carriage, and means for operatively connecting said retarding device with the carriage after the latter has moved freely and uninterruptedly a predetermined distance and for maintainin said retarding device connected with said carriage during the remainder of the run of the latter. V g

machine, the combination of a power driven carriage, a carriage retarding device, and a lost motion mechan ical connection between said retarding device and said carriage. v

4. In a typewriting machine, the combination of a power-driven carriage; a carriage ing device.

vretardin device including a movable part; a

key; an means for connecting said carnage with said retarding device, eluding an engaging device, said key being operative to connect said engaging device with said carriage so as' to cause movement of said means to a [predetermined extent independently of sai movable part.

said means in-- 5. he typewriting machine,-the combina- I tion of a ower-driven carriage; acarriage retarding evice including a movable part; a key; and means for connecting said carriage with said retarding device, said means 'ineluding engaging devices, said key being op.-

erated to connect one of said engaging vdevices with said carrla e to move sard means independently of sai movable part and to connect another of said engaging devices with said movable part. 6. In a typewriting machine, the combination of a ower driven carriage, a carriage retarding evice including amovable part, and

a rotary-member operative by the carriage,

said'member after 1t has been turned a pre,

determined extent being coupled with the movable part of said retarding device.

7 In a typewriting machine, the"combi nation of a power driven carriage, a carriage retarding device, for connecting said rotary member with the carriage, and a lost motion connection be.- tween said rotary member and said retard- 8. In a typewriting machine, the combination of a power driven carriage, a carriage retarding device comprising a rotary part a rack connected with said carriage, a toothed rotary member or pinion operative to engage -said rack, and lost motion connections be? tween said pinion and the rotary part of said retarding device whereby saidpinion is first turned by said rack and thereafter the ro tary part of said retarding device is turned by said pinion.

9. In a typewriting machine, the combination of a, power driven carriage, a carriage retarding device comprisinga rotary part, a rack connected with said carriage, a toothed rotary member or pinion cooperative with said rack, and means normallymaintaining saidpinion in ative on the rotary part of said retarding device, the pinion after it has been turned a pre determined extent becoming o erative to turn the rotary part of the retar ing device. 10. In a typewriting machine the combia rotary member, means.

a position wherem it is inopernation of a power driven carriage, a rack connected with said carriage, a shaft, 9. toothed rotary member or pinion loosely mounted on said shaft, a retarding device comprising a part fixed on said shaft, and a spring normally maintaining said pinion-in a position wherein it is inoperative on the rotary part of said retarding device. I 11. In a typewntmg machine, the combiceasesnation of a power driven carriage, a rack connected with said carriage, a shaft, a toothed rotary member or inion loosely mounted on said shaft and having a projecting portion, a retardin device comprising a part fixed on said shaft, a spring normally maintaining the projecting portion of said pinion in contact at one point with the art of the retarder on the shaft, said pinion eing rotatable to engage the part at another point.

12. In a typewriting machine, the combination of a power driven carriage, carriage escapement mechanism therefor, a rack pivoted on the carriage and normally connected with said escapement mechanism, a retarding device com risi'ng a bearing pivotally mounted on the Frame of the machine, 9. casing fixed to said bearing, a shaft rotatable in said bearing, an arm or blade fixed on said shaft, and a stop portion or lug fixed on said shaft, a spring ressed pinion loosely mount.-

ed on said sha t and having a portion normally in contact with the stop portion or lug of the retarding device, said pinion being normally disengaged from said pivoted rack,

and hand operated means for moving said retarding device and said pinion to cause said pinion to separate said pivoted rack from said escapement devices and to connect said carria e with said retarding device.

13. In a typewriting machine, the combination of a carriage and a carriage actuated retarding device which includes a movable part that is continuously o erative on the carriage to retard said carriage during the greater portions of long runs of said carriage,

I said movable part being inoperative during short runsof said carriage.

14. In a typewriting machine, the combination of a-power driven carriage, a carriage retarding device actuated by the carriage, means for operatively connecting said retarding device with the carriage after the carriage has moved freely a plurality of letter space distances, and means for varying the number of letter space distances through whichthe carriage may move before the 'retarding device is connected with it. Q;

15. In a typewriting machine, the combination of a power driven carriage, a carriage retarding device, a rotary member operative by the carriage, said rotary member after it has been turned a predetermined extent being operative to actuate the retardin device, and means for varying the extent w oh the rotary member may move before becoming operative to actuate the retarding device.

16. In a typewriting machine, the combination of a carria e, and retarding mechanism therefor inclu a stationary element, said retarding mechanism being provided with means for insuring a preliminary movement of the carriage before the movable element of said retarding mech anism is brought-into action.

17. In a typewriting machine, the combination of a power-driven carriage; a carriage retarding device including a movable part; a key; and means for connecting said carriage with said retarding device, said means including an engaging device, said key being opera tive to connect said en aging device with said carriage to move said a limited extent independently of said movable part.

18. In a typewriting machine, the combination of a carriage, a retarding device, a connecting device, means for bringing said connecting device into engagement withthe carriage, and a second connecting device connected op eratively to the retarding device,

said second device being coupled with and moved by the first connecting device after said first connect' device has itself been moved independent y by said carriage.

19. The combination of a carriage, a retarding device normally in inoperative condition, means for connecting the retarding device with the carriage while said retarding device is in inoperative condition, and means for rendering t eretarding device operative, said last named means being actuated by the carriage travel.

20. The combination of a carriage, a re-' tardin device, means for connecting the retarding device to the carriage, said means being adapted to move with the carriage to a limited extent while the retarding device remains inactive, and means for subsequently connecting the retarding device with the carriage so as to re-act thereon.

Signed at the borough of Manhattan, city of New York, in thecounty'of New York,'and State of New York, this 19th day of April A. D. 1906.

MORRIS .w. root. Witnesses E. M. WELLS, J13. Dnnvns.

a movable element and 60 engaging device to 

